Invista North America S.a.r.l.

Invista Technologies S.a.r.l.

Invista Textiles Limited

Sudhir Aki

Kenneth Richard Seddon

Gregory S Kirby

Thomas E Vos

William J Tenn, Iii

Tseng H Chao

Keith Whiston

Larry E Moerbe

Bruce Edwin Murphree

Benjamin D Herzog

Stewart Forsyth

Milind V Kantak

James E McIntosh

Michael W Wensing

Wyatte E Allen

Mark Anstrom

Charles Nelson Campbell, Ii

Mark D Rogers

William J Tenn Iii

William J Iii Tenn

Charles Nelson Ii Campbell

Wyatt E Allen

Mark A Anstrom

A process of hydrolyzing a monodentate, bidentate or tridentate phosphorus-based phosphite ester ligand or ligand blend for a transition metal catalyst comprising contacting the ligand or ligand blend with a hydrolysis catalyst of the formula (RX)P(OH)where n is 0, 1 or 2 wherein the ligand or ligand blend comprises one or more of (i) a bidentate biphosphite ligand of formula (III), (R&#x2014;X)(R&#x2014;X)P&#x2014;X&#x2014;Y&#x2014;X&#x2014;P(X&#x2014;R)(X&#x2014;R), (ii) a tridentate triphosphite ligand of formula (IIIA) (R&#x2014;X)(R&#x2014;X)P&#x2014;X&#x2014;Y&#x2014;X&#x2014;P(X&#x2014;R)&#x2014;(X&#x2014;Y&#x2014;K&#x2014;P(X&#x2014;R)&#x2014;(X&#x2014;R) or (iii) a monodentate phosphite ligand of formula (IV) P(X&#x2014;R)(X&#x2014;R)(X&#x2014;R) where each X is oxygen or a bond and each Y is an optionally substituted C6-C20 arylene, followed by separation of the ligand hydrolysis products.

Hydrolysis catalyst and process

A process of stabilizing a bidentate or tridentate phosphorus-based phosphite ester ligand or mixture thereof in a hydrocyanation reaction milieu comprising water, wherein the ligand or ligand mixture comprises one or more of (i) a bidentate biphosphite ligand of formula (III), (R&#x2014;X) (R&#x2014;X) P&#x2014;X&#x2014;Y&#x2014;X&#x2014;P(X&#x2014;R) (X&#x2014;R) or (ii) a tridentate triphosphite ligand of formula (IIIA) (R&#x2014;X) (R&#x2014;X) P&#x2014;X&#x2014;Y&#x2014;X&#x2014;P(X&#x2014;R)&#x2014;(X&#x2014;Y&#x2014;R&#x2014;P(X&#x2014;R)&#x2014;(X&#x2014;R) where each X is oxygen or a bond and each Y is an optionally substituted C6-C20 arylene group, comprising admixing the bidentate and/or tridentate with a stabilizing amount of one or more monodentate phosphite ligand of formula P(X&#x2014;R)(X&#x2014;R)(X&#x2014;R) where each X is oxygen or a bond, wherein the monodentate ligand has a rate of hydrolysis greater than the rate of hydrolysis of the bidentate or tridentate ligand in the presence of water in a hydrocyanation reaction milieu, and thereby preserve concentrations and proportions of the bidentate and/or tridentate ligand(s) in the ligand blend.

Stable ligand mixtures and processes for making same

The present invention relates to a process for hydrocyanating 3-pentenenitrile. The process can include feeding 3-pentenenitrile and HCN to a hydrocyanation reaction zone that includes a Lewis acid promoter, nickel, and a phosphorus-containing ligand. In various embodiments, the process can also include controlling water concentration within the hydrocyanation reaction zone sufficient to maintain a high activity of the ligand catalyst complex while recycling at least a portion of the ligand catalyst complex.

Process for making nitriles

The invention relates to an ionic liquid composition and a method for preparing the ionic liquid. The ionic liquid comprises a cation containing the Formula I, as herein disclosed, and wherein: n is 2, Ris selected from the group consisting of: H, C-Calkyl, aryl or together with Rmay form a heterocyclic ring, and Ris selected from the group consisting of: H, C-Calkyl, aryl or together with Rmay form a heterocyclic ring, and Ris selected from the group consisting of hydrogen and C-Calkyl, and wherein Rand Rare not simultaneously selected from hydrogen.

Ionic liquids

Growing community of inventors

Katy, TX, United States of America

Sudhir Aki